FinOpsFinOps / Cloud Cost Governance

AWS Cost Optimization

A production AWS account had grown to roughly $5,450 per month across 12+ services with no cost governance in place. 3 Dices ran a full cost audit, right-sized compute and storage, built a Reserved Instance plan, and cleaned up billing quirks, cutting the monthly bill by roughly half without touching reliability.

Monthly bill reduced by roughly half
~50%
Lower monthly bill
~60%
Cut from volume right-sizing
$13.6k
Annual RI savings identified
12+
Services audited

The challenge

A production account (~$5,450/month across 12+ services) had grown without cost governance: oversized volumes, idle resources, no reserved-capacity strategy, and DNS billing quirks.

  • No month-over-month cost visibility across a 12+ service estate
  • Oversized EBS volumes and idle resources billing every month
  • No Reserved Instance or commitment-discount strategy on steady-state RDS
  • Route 53 DNS billing inflated by CNAME records and NXDOMAIN charges
  • No budget alerts to catch cost drift early

Our solution

Cost Analysis & Visibility

  • Monthly cost analysis with month-over-month trending across 12+ services
  • Cost Explorer and Trusted Advisor review to surface idle and oversized resources
  • Budget alerts wired up so cost drift is caught early instead of at invoice time

Right-Sizing & Cleanup

  • Right-sized EC2 and RDS instances to actual utilization
  • Shrank EBS volumes (400GB → 60GB where safe), a process AWS does not natively support
  • Removed idle resources that were billing with no workload attached

Commitment & Billing Optimization

  • Reserved Instance plan for RDS across 11 instances and 4 regions
  • Converted Route 53 CNAME records to Alias records to remove query charges
  • Eliminated NXDOMAIN billing on Route 53 hosted zones

The results

Cost

  • Monthly bill reduced by roughly half
  • ~60% reduction from volume resizing and right-sizing
  • $13,642/year identified in RDS Reserved Instance savings

Billing Hygiene

  • Route 53 billing cut from ~$21/mo to a projected $2–5/mo
  • Idle resources removed from the monthly invoice
  • Budget alerts in place to catch future drift

Governance

  • Month-over-month cost trending across 12+ services
  • Reserved-capacity strategy documented across 4 regions
  • Right-sizing applied without impacting reliability

Technologies & AWS services

  • Cost Explorer
  • Trusted Advisor
  • EC2
  • RDS
  • EBS
  • Route 53

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